Abstract: An electrical power supply system for a machine is provided. The electrical power supply system includes a generator, a primary power converter unit and an auxiliary power converter unit. The primary power converter unit is electrically coupled to the generator. The primary power converter unit includes a rectifier connected to the generator and an inverter electrically connected to the rectifier by a Direct current (DC) link. Further, the auxiliary power converter unit is electrically connected to the DC bus within the primary power converter unit.

Abstract: An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece. The welder comprises: a leading electrode driven toward a point in the groove by a first wire feeder operated at a first speed by a first motor with a speed control input and a tachometer derived first feedback signal, a trailing electrode driven toward the same point by a second wire feeder operated at a second speed by a second motor with a speed control input and a tachometer derived second feedback signal, a first power source directing a first current to flow through the leading electrode and a second power source causing a second current to flow through the trailing electrode with the current flow being in a series arc circuit. The second power source being grounded to the workpiece to modify the series arc current so ground current flows to the workpiece whereby the second current is generally equal to the first current minus the ground current.

Abstract: An accessory attachment system for a machine is disclosed. The accessory attachment system includes a housing configured to be detachably coupled with the machine. A plurality of electric connectors is disposed in the housing. The plurality of electric connectors is communicably coupled with an electrical system of the machine. The plurality of electric connectors is configured to selectively provide an electric power to one or more detachable external devices. A fluid connector is disposed in the housing. The fluid connector is in fluid communication with a hydraulic system of the machine. The accessory attachment system further includes a hydraulic device detachably coupled with the housing. The hydraulic device includes a device fluid connector configured to be fluidly coupled with the fluid connector of the housing. The hydraulic device is selectively powered by the hydraulic system of the machine.

Abstract: An accessory attachment system for a machine is disclosed. The accessory attachment system includes a housing configured to be detachably coupled with the machine. A plurality of electric connectors is disposed in the housing. The plurality of electric connectors is communicably coupled with an electrical system of the machine. The plurality of electric connectors is configured to selectively provide an electric power to one or more detachable external devices. A fluid connector is disposed in the housing. The fluid connector is in fluid communication with a hydraulic system of the machine. The accessory attachment system further includes a hydraulic device detachably coupled with the housing. The hydraulic device includes a device fluid connector configured to be fluidly coupled with the fluid connector of the housing. The hydraulic device is selectively powered by the hydraulic system of the machine.

Abstract: A system for arc welding two sides of a joint simultaneously is disclosed. By customizing welding waveforms and the distance between two or more electrodes, weld currents can be designed to transfer current to and through one or more electrodes in addition to the current traditionally passed only to the common node.

Abstract: A machine comprising a clutch that engages and disengages. The machine includes an engine operable at various engine speeds including a resonant frequency engine speed, and a transmission connected to the engine through the clutch. The engine applies power to the transmission when the clutch is engaged, and the engine does not apply power to the transmission when the clutch is disengaged. The machine comprises an engine starter that applies power to the engine, and an electronic control module that controls the clutch to disengage when the engine starter applies power to the engine and to engage after the engine speed exceeds the resonant frequency engine speed.

Abstract: An electrical power supply system for a machine is provided. The electrical power supply system includes a generator, a primary power converter unit and an auxiliary power converter unit. The primary power converter unit is electrically coupled to the generator. The primary power converter unit includes a rectifier connected to the generator and an inverter electrically connected to the rectifier by a Direct current (DC) link. Further, the auxiliary power converter unit is electrically connected to the DC bus within the primary power converter unit.

Abstract: A system for arc welding two sides of a joint simultaneously is disclosed. By customizing welding waveforms and the distance between two or more electrodes, weld currents can be designed to transfer current to and through one or more electrodes in addition to the current traditionally passed only to the common node.

Abstract: A machine comprising powertrain components, an engine that applies power to powertrain components, and a hybrid motor that applies power to powertrain components. The machine includes an electronic control module that controls the hybrid motor to apply power to powertrain components. The machine includes an engine parameter sensor. The engine parameter sensor senses engine performance parameters and sends engine performance parameter signals to the electronic control module. The electronic control module monitors engine performance parameters and control the hybrid motor to apply power to the powertrain components to provide hybrid performance parameters to counteract the engine performance parameters.

Abstract: A machine comprising a clutch, an engine operable at a resonant frequency engine speed, and a hybrid motor. The hybrid motor is connected to the engine through the clutch. The hybrid motor applies power to the engine when the clutch is engaged, and does not apply power to the engine when the clutch is disengaged. The hybrid motor is operable at a predetermined hybrid motor speed. An ignition switch starts the hybrid motor. An electronic control module disengages the clutch until the hybrid motor speed exceeds the predetermined hybrid motor speed, and engages the clutch after the hybrid motor speed exceeds the predetermined hybrid motor speed.

Abstract: An electric arc welding system for depositing weld metal along a groove between two edges of a metal workpiece where the system contains a first power supply and a second power supply, each providing a welding waveform to respective welding electrodes. The positive output terminals of both power supplies are coupled to the same contact tip and the negative output terminal of one of the power supplies is not coupled to the workpiece.

Abstract: A machine comprising a clutch that engages and disengages. The machine includes an engine operable at various engine speeds including a resonant frequency engine speed, and a transmission connected to the engine through the clutch. The engine applies power to the transmission when the clutch is engaged, and the engine does not apply power to the transmission when the clutch is disengaged. The machine comprises an engine starter that applies power to the engine, and an electronic control module that controls the clutch to disengage when the engine starter applies power to the engine and to engage after the engine speed exceeds the resonant frequency engine speed.

Abstract: A machine comprising an engine operable at various engine speeds including a resonant frequency engine speed. The machine comprises a hybrid motor operatively connected to the engine, the hybrid motor being adapted to apply power to the engine. An electronic control module is configured to control the hybrid motor to apply power to the engine until at least a time when the engine speed exceeds the resonant frequency engine speed.

Abstract: A machine comprising powertrain components, an engine that applies power to powertrain components, and a hybrid motor that applies power to powertrain components. The machine includes an electronic control module that controls the hybrid motor to apply power to powertrain components. The machine includes an engine parameter sensor. The engine parameter sensor senses engine performance parameters and sends engine performance parameter signals to the electronic control module. The electronic control module monitors engine performance parameters and control the hybrid motor to apply power to the powertrain components to provide hybrid performance parameters to counteract the engine performance parameters.

Abstract: A machine comprising a clutch, an engine operable at a resonant frequency engine speed, and a hybrid motor. The hybrid motor is connected to the engine through the clutch. The hybrid motor applies power to the engine when the clutch is engaged, and does not apply power to the engine when the clutch is disengaged. The hybrid motor is operable at a predetermined hybrid motor speed. An ignition switch starts the hybrid motor. An electronic control module disengages the clutch until the hybrid motor speed exceeds the predetermined hybrid motor speed, and engages the clutch after the hybrid motor speed exceeds the predetermined hybrid motor speed.

Abstract: A machine including an engine cooling system, a secondary system with a low-temperature limit, and a secondary cooling system. A temperature sensor is associated with the secondary cooling system. The temperature sensor senses the secondary cooling system temperature and provides a temperature signal. A control valve has an open position allowing fluid communication between the engine cooling system and the secondary cooling system, and a closed position disallowing fluid communication. A controller receives signals from the secondary system temperature sensor and commands the control valve to open when the secondary cooling system temperature is below the low-temperature limit.

Abstract: A machine includes a frame, at least one implement, and a linkage assembly movably coupled to the implement and to the frame. The machine also has an energy recovery system that includes an energy storage system. The energy storage system includes at least one of a hydraulic accumulator, a battery, a flywheel, an ultra-capacitor, a fuel cell, and an auxiliary power unit. At least a portion of the energy storage system is disposed as counterweight to the implement.

Abstract: An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece where the welder comprises a first electrode driven by a first wire feeder toward a point in said groove, a second electrode driven by a second wire feeder toward the point and a main power source with a first output terminal connected to the first electrode and a second output terminal connected both to the second electrode and directly or indirectly to the metal workpiece to create a second electrode path and a workpiece path. The power source includes a high speed switching output stage for creating current with a selected AC waveform between the first and second output terminals where the waveform of the main power source is generated by a waveform generator controlling a pulse width modulator circuit to determine the current operation of the output stage.

Abstract: An electric arc welding system for depositing weld metal along a groove between two edges of a metal workpiece where the system contains a first power supply and a second power supply, each providing a welding waveform to respective welding electrodes. The positive output terminals of both power supplies are coupled to the same contact tip and the negative output terminal of one of the power supplies is not coupled to the workpiece.

Abstract: Electric arc welder (10) performs a given weld process with selected current waveform performed between electrode (24) and workpiece (26). Welder (10) includes a controller with a digital processor (30), sensor (44) for reading instantaneous weld current, and circuit (56) to convert the instantaneous current into a digital representation of the level of instantaneous weld current. Digital processor (30) has program circuit (64, 66) to periodically read and square the digital representation at a given rate, register (70, 72) for summing a number N of square digital representations to give a summed value, and an algorithm (82, 84, 86, 88) for periodically dividing the summed value by the number N to provide a quotient and then taking the square root of said quotient to thereby digitally construct rms signal (40) representing the root mean square of the weld current.